A bellows assembly and a range hood having the same

Abstract

The present application relates to the technical field of range hood, and discloses a wind box assembly and a range hood with the same, the wind box assembly comprising a panel, a wind collecting box and a damper plate assembly, the damper plate assembly comprising a guide rail, a damper plate and a driving device arranged in the wind collecting box, the damper plate being provided with a shielding surface and a wind guide opening, the shielding surface being provided with a bulge portion protruding towards the air suction port, the damper plate having a first position and a second position on the guide rail; when the damper plate is in the first position, the bulge portion extends into the air suction port, the top surface of the bulge portion is flush with the outer surface of the panel and forms the appearance surface of the panel; when the damper plate is in the second position, the wind guide opening corresponds to the air suction port, the air suction port is opened and used for air suction; compared with the prior art, the wind box assembly of the present application can reduce the entry of external dust into the wind collecting box and the generation of oil stains in the inner cavity of the wind collecting box when the range hood is turned off, and the range hood is easy to clean when the range hood is cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of range hood, in particular, to a wind box assembly and a range hood with the same. BACKGROUND

[0002] The range hood is a kind of kitchen appliance for purifying kitchen environment, which can quickly remove the waste of stove combustion and the oil fume generated in the cooking process and discharge it to the outdoor, so as to reduce pollution and purify air. When the range hood is working, the airflow formed by the oil fume flows to the air inlet on the panel of the range hood under the action of the exhaust fan, and then enters the air collecting box connected with the air inlet, and finally is discharged from the exhaust air duct under the action of the exhaust fan in the air collecting box. After the range hood works for a long time, the mixture of oil and water in the oil fume will adhere to and accumulate on the inner wall surface of the air collecting box of the range hood. When the dust in the external air enters the air collecting box through the air inlet on the panel, the dust will mix with the mixture of oil and water on the inner wall surface of the air collecting box to form dirt attached to the inner wall surface of the air collecting box and the shell of the exhaust fan. The dirt formed by the oil, water and dust has relatively large viscosity, and it is difficult to drop from the inner wall surface of the air collecting box and the shell of the exhaust fan. When the accumulation amount of the dirt is relatively large, the purification effect of the range hood will be affected, and the user needs to disassemble the range hood to clean the dirt completely. Moreover, the dirt is also difficult to clean when the range hood is cleaned. SUMMARY

[0003] The present application aims to provide a wind box assembly and a range hood with the same, which are used to solve the above technical problems.

[0004] A wind box assembly for a range hood, comprising:

[0005] a panel, on which an air inlet is arranged;

[0006] an air collecting box connected with the air inlet;

[0007] a damper plate assembly, which comprises a guide rail arranged in the air collecting box, a damper plate in sliding connection with the guide rail, and a driving device for driving the damper plate to move on the guide rail, the damper plate is provided with a shielding surface and a wind guide opening arranged in parallel with the shielding surface, the shielding surface is provided with a bulge portion protruding towards the air inlet, the bulge portion is matched with the air inlet, and the damper plate has a first position and a second position on the guide rail; when the damper plate is in the first position, the bulge portion extends into the air inlet, the top surface of the bulge portion is flush with the outer surface of the panel and forms the appearance surface of the panel; when the damper plate is in the second position, the wind guide opening corresponds to the air inlet, and the air inlet is opened and used for air suction.

[0008] According to an embodiment of the present application, the guide rail comprises a first section and a second section, the driving device drives the air door plate to slide in the first section, the air door plate switches between the first position and the second position, and the bulge part extends from the air inlet or corresponds to the air inlet; the driving device drives the air door plate to move to the second section of the guide rail, the air door plate is in an inclined state and the inclination angle is 10°-30°, and a gap exists between the bulge part and the panel.

[0009] According to an embodiment of the present application, the bottom of the air collecting box is provided with a first support, the driving device is fixed on the first support, the driving end of the driving device is fixedly connected to the lower end of the air door plate and drives the air door plate to slide on the guide rail, and when the air door plate moves to the second section of the guide rail, the air door plate and the panel form the accommodating cavity.

[0010] According to an embodiment of the present application, the air collecting box is further provided with a cleaning device, the cleaning device comprises a support assembly arranged on the inner wall of the air collecting box and a water supply pipeline arranged on the support assembly, the water supply pipeline is provided with a spraying assembly facing one side, the support assembly is provided with a rotating driving structure capable of driving the water supply pipeline to rotate, the inner wall of the air collecting box is further provided with a guide structure capable of sliding the support assembly, and the guide structure is provided with an up-down driving structure for driving the support assembly to slide along the guide structure.

[0011] According to an embodiment of the present application, the air collecting box is provided with an exhaust fan, the spraying assembly is provided with a first cleaning position and a second cleaning position, in the first cleaning position, the spraying assembly is located above the air inlet, the air door plate shields the air inlet, the exhaust fan is closed, and the spraying assembly sprays the cleaning medium to clean the inner cavity of the air collecting box; in the second cleaning position, the spraying assembly is located in the accommodating cavity, the air door plate is located in the second section of the guide rail, and at this time, the exhaust fan operates, the spraying assembly sprays the cleaning medium towards the top surface of the bulge part to clean the shielding surface.

[0012] According to an embodiment of the present application, the spraying assembly comprises a plurality of spray heads uniformly distributed on the water supply pipeline, the water supply pipeline is connected with a water pump, the water supply pipeline is provided with a control valve, the water pump is connected with a water tank for storing the cleaning medium, a connecting port is arranged between the spray head and the water supply pipeline, and a switch valve is arranged at each connecting port.

[0013] According to an embodiment of the present application, the rotating driving structure comprises a rotating driving motor, the rotating driving motor is provided with an output rotating shaft, the output rotating shaft is connected with a first connecting rod, the water supply pipeline is connected with a second connecting rod, and a third connecting rod is hinged between the first connecting rod and the second connecting rod; and the up-down driving structure is an electric push rod for driving the support assembly to slide along the guide structure.

[0014] According to an embodiment of the present application, the bracket assembly comprises a left bracket and a right bracket, the water supply pipe is rotatably connected to the left bracket and the right bracket, the water supply pipe is made of hard material, the rotation driving structure is fixed to the left bracket or the right bracket, and the bracket assembly is arranged above the air inlet.

[0015] The oil fume extractor with the wind box assembly comprises a control system capable of controlling the operation state of the smoke exhaust fan, the smoke exhaust fan and the driving device are electrically connected to the control system, when the smoke exhaust fan is closed, the driving device drives the damper plate to shield the air inlet so as to close the air inlet, the cleaning device enters the first cleaning position, the spraying assembly starts to work and can spray the cleaning medium at 360°, when the smoke exhaust fan is opened, the cleaning device enters the second cleaning position, the driving device drives the damper plate to be away from the air inlet so as to open the air inlet, and the spraying assembly cleans the bulge part.

[0016] According to an embodiment of the present application, the bottom of the wind box is provided with an oil leakage hole and an oil cup for receiving the oil stains flowing out of the oil leakage hole, and the oil cup is provided with a liquid level sensor, when the cleaning device is in the first cleaning position, the spraying time is adjusted according to the amount of oil stains collected in the oil cup, and the cleaning device stops working after the spraying time is reached; when the spraying assembly enters the second cleaning position, the cleaning device stops working after 1-5 minutes.

[0017] Compared with the prior art, the wind box assembly has the following advantages:

[0018] The wind box assembly of the present application can reduce the entry of external dust into the wind box, reduce the generation of dirt attached to the inner wall surface of the panel, the inner wall surface of the wind box and the shell of the smoke exhaust fan, and make the oil fume extractor easy to clean when the oil fume extractor is cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Structure diagram of the oil fume extractor with the wind box assembly of the present application after the back plate is removed;

[0020] Figure 2 Exploded view of the damper plate assembly of the wind box assembly of the present application;

[0021] Figure 3 Front view of the oil fume extractor with the wind box assembly of the present application;

[0022] Figure 4 is Figure 3 Cross-sectional view in the direction of A-A;

[0023] Figure 5 is Figure 4 Local enlarged view of B;

[0024] In the figure: 1. panel, 11. air suction port, 2. air collecting box, 21. first support, 22. guide structure, 23. oil leakage hole, 24. oil cup, 25. back plate, 3. air door plate assembly, 31. guide rail, 311. first direction section, 312. second direction section, 32. air door plate, 321. air guide opening, 322. bulge part, 323. gasket, 33. driving device, 34. bearing, 35. damping piece, 4. cleaning device, 41. support assembly, 42. water supply pipeline, 43. spraying assembly, 44. rotation driving structure, 441. rotation driving motor, 442. first connecting rod, 443. second connecting rod, 444. third connecting rod, 45. up-down driving structure, 5. exhaust fan

[0025] The implementation and advantages of the present application will be further described in conjunction with the embodiments, with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, a plurality of practical details will be described in the following description. However, it should be appreciated that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0027] It should be noted that all directional references (such as upper, lower, left, right, front, rear, etc.) used herein are only used for explanation purposes in describing the relative position relationship between the components, the movement condition, etc. in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional references will also change accordingly.

[0028] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and is not particularly intended to indicate the order or sequence, nor is it intended to limit the present application. It is merely for the purpose of distinguishing the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0029] In order to further understand the content, characteristics and effects of the present application, the following embodiments are exemplified and described in detail as follows with reference to the accompanying drawings:

[0030] The present application discloses a kind of air box assembly, please refer toFigure 1 and Figure 2The disclosed wind box assembly is used in a range hood, comprising a panel 1, a wind collecting box 2 and a damper plate assembly 3, the panel 1 is provided with an air inlet 11, the wind collecting box 2 is connected with the air inlet 11, the damper plate assembly 3 comprises a guide rail 31 arranged in the wind collecting box 2, a damper plate 32 slidably connected with the guide rail 31 and a driving device 33 for driving the damper plate 32 to move on the guide rail 31, the damper plate 32 is provided with a shielding surface and a wind guide opening 321 arranged in parallel with the shielding surface, the shielding surface is provided with a bulge 322 protruding towards the air inlet 11, the bulge 322 is matched with the air inlet 11, the damper plate 32 has a first position and a second position on the guide rail 31, when the damper plate 32 is at the first position, the bulge 322 extends into the air inlet 11, the top surface of the bulge 322 is flush with the outer surface of the panel 1 and forms the appearance surface of the panel 1, when the damper plate 32 is at the second position, the wind guide opening 321 corresponds to the air inlet 11, the air inlet 11 is opened and used for air suction. The wind box assembly of the present application is used in a range hood, when the range hood is started, the driving device 33 is started, the driving device 33 drives the damper plate 32 to move on the guide rail 31, so that the damper plate 32 moves from the first position to the second position, the wind guide opening 321 on the damper plate 32 corresponds to the air inlet 11 on the panel 1, the shielding surface on the damper plate 32 moves away from the air inlet 11, the air inlet 11 is opened, external oil fume can enter the wind collecting box 2 through the air inlet 11 and the wind guide opening 321, and then is discharged from the wind collecting box 2 by the exhaust fan of the range hood, when the range hood is turned off, the driving device 33 is started, the driving device 33 drives the damper plate 32 to move on the guide rail 31, so that the damper plate 32 moves from the second position to the first position, the wind guide opening 321 on the damper plate 32 is misaligned with the air inlet 11 on the panel 1, the shielding surface on the damper plate 32 moves towards the air inlet 11, until the bulge 322 on the shielding surface extends into the air inlet 11 and shields the air inlet 11, the air inlet 11 is closed, air in the environment cannot enter the wind collecting box 2 through the air inlet 11 when the range hood is turned off, dust in the air also cannot mix with the mixture of oil and water attached to the inner wall surface of the panel 1, the inner wall surface of the wind collecting box 2 and the shell of the exhaust fan when the range hood is turned off, so that the formation of dirt is reduced, the mixture of oil and water attached to the inner wall surface of the panel 1, the inner wall surface of the wind collecting box 2 and the shell of the exhaust fan has relatively small viscosity, and will flow downwards along the inner wall surface of the panel 1, the inner wall surface of the wind collecting box 2 and the shell of the exhaust fan under the action of gravity when the mixture accumulates to a certain amount, and then drips onto the bottom plate of the wind collecting box 2, and finally drips into the oil cup below the wind collecting box 2 through the oil leakage hole on the bottom plate of the wind collecting box 2 and is collected. The wind box assembly of the present application can close the air inlet 11 on the panel 1 by the shielding surface of the damper plate 32 when the range hood is turned off, so that the entry of external dust into the wind collecting box 2 is reduced, the formation of dirt attached to the inner wall surface of the panel 1, the inner wall surface of the wind collecting box 2 and the shell of the exhaust fan is reduced, and the range hood is easy to clean when cleaning the range hood.In addition, since the damper plate 32 is located in the air collecting box 2, the panel 1 has a thickness, when the damper plate 32 opens the air inlet 11, even if the blocking surface of the damper plate 32 closely adheres to the inner wall surface of the panel 1, the air inlet 11 forms a groove in the thickness direction of the panel 1, so that the outer side surface of the panel 1 is not a complete plane, and after the oil fume passes through the air inlet 11, the mixture of oil and water will be attached to the inner wall surface of the air inlet 11, and dirt will be easily generated in the groove formed after the blocking surface blocks the air inlet 11, which is inconvenient for the user to clean. The air box assembly of the present application, the blocking surface is provided with a bulge portion 322 protruding towards the air inlet 11, the bulge portion 322 is matched with the air inlet 11, when the damper plate 32 is in the first position, the bulge portion 322 extends into the air inlet 11, and the top surface of the bulge portion 322 is flush with the outer side surface of the panel 1 and forms the appearance surface of the panel 1, the top surface of the bulge portion 322 is located in the same plane as the outer side surface of the panel 1, which is convenient for the user to clean the panel 1 of the range hood, and also can keep the appearance surface of the panel 1 smooth and complete.

[0031] Please refer to Figures 2 to 5 The air box assembly of the present application, the guide rail 31 includes a first direction segment 311 and a second direction segment 312, when the damper plate 32 is driven by the driving device 33 to slide on the first direction segment 311, the damper plate 32 switches between the first position and the second position, the bulge portion 322 extends out of the air inlet 11 or the air guide opening 321 corresponds to the air inlet 11; when the damper plate 32 is driven by the driving device 33 to move to the second direction segment 312 of the guide rail 31, the damper plate 32 is in an inclined state and the inclination angle is 10°-30°, and there is a gap between the bulge portion 322 and the panel 1. The first direction segment 311 and the second direction segment 312 of the guide rail 31 are located in different planes, when the first direction segment 311 is close to the inner wall surface of the panel 1, there is a gap between the second direction segment 312 and the inner wall surface of the panel 1, so that when the damper plate 32 slides on the first direction segment 311, the damper plate 32 switches between the first position and the second position, the bulge portion 322 extends out of the air inlet 11 to close the air inlet 11, or the air guide opening 321 corresponds to the air inlet 11 to open the air inlet 11; when the damper plate 32 is driven by the driving device 33 to move along the guide rail 31 from the first direction segment 311 to the second direction segment 312, the damper plate 32 is in an inclined state and the inclination angle is 10°-30°, at this time, the damper plate 32 is not closely attached to the inner wall surface of the panel 1, and the bulge portion 322 on the blocking surface of the damper plate 32 is also not closely attached to the inner wall surface of the panel 1, and there is a gap between the bulge portion 322 and the panel 1, which can avoid that the oil stains on the inner wall surface of the panel 1 adhere to the bulge portion 322, and further affect the appearance of the panel 1 when the bulge portion 322 extends into the air inlet 11.

[0032] It needs to be understood that when the damper plate 32 is located on the second section 312 of the guide rail 31, the suction port 11 on the panel 1 is still in the open state. That is, there are two cases for the opening of the suction port 11, the first case is that the damper plate 32 is located on the first section 311 of the guide rail 31 and the air guide opening 321 corresponds to the suction port 11, and the second case is that the damper plate 32 is located on the second section 312 of the guide rail 31, at this time the damper plate 32 slides to the lower side of the suction port 11 and is arranged obliquely relative to the panel 1, at this time the suction port 11 is still in the open state. When the suction port is in the open state, the range hood can be started to operate. When the opening of the suction port 11 is the first case, the damper plate 32 is located on the first section 311 of the guide rail 31 and is close to the inner wall surface of the panel 1, at this time the damper plate 32 does not affect the mixture of oil and water on the exhaust fan in the air collecting box 2 to drop to the bottom of the air collecting box 2; but when the opening of the suction port 11 is the second case, the damper plate 32 is arranged obliquely and the lower end of the damper plate 32 extends to the direction of the back plate of the air collecting box 2, the greater the oblique angle of the damper plate 32, the smaller the distance from the lower end of the damper plate 32 to the back plate of the air collecting box 2, and the easier the mixture of oil and water on the exhaust fan in the air collecting box 2 to drop on the damper plate 32; the smaller the oblique angle of the damper plate 32, the greater the distance from the lower end of the damper plate 32 to the back plate of the air collecting box 2, and the more difficult the mixture of oil and water on the exhaust fan in the air collecting box 2 to drop on the damper plate 32; but when the oblique angle of the damper plate 32 is too small, the gap between the damper plate 32 and the panel 1 is not enough to accommodate the bulge part 322, and the oil stains on the part of the panel 1 below the suction port 11 are easy to adhere to the bulge part 322. Therefore, the oblique angle of the damper plate 32 is set to 10°-30°, which can make the gap between the damper plate 32 and the panel 1 enough to accommodate the bulge part, and there is still a gap between the bulge part 322 and the panel 1, and at the same time, the damper plate 32 does not affect the mixture of oil and water on the exhaust fan in the air collecting box 2 to drop to the bottom of the air collecting box 2.

[0033] Please refer to Figure 2 and Figure 5 , the air box assembly of the present application, the sidewall of the bulge part 322 is provided with a deformable gasket 323; when the damper plate 32 is in the first position, the damper plate 32 is close to the panel 1, the bulge part 322 extends into the suction port 11 and closes the suction port 11, the top surface of the bulge part 322 is flush with the outer side surface of the panel 1, and the gasket 323 on the sidewall of the bulge part 322 is pressed together with the sidewall surface of the suction port 11 and seals the suction port 11, which can make the bulge part 322 seal the suction port 11 tightly.

[0034] Please refer to Figure 1 and Figure 2The bottom of the wind box assembly is provided with a first support 21, and the driving device 33 is fixed on the first support 21. The driving end of the driving device 33 is fixedly connected to the lower end of the damper plate 32 and drives the damper plate 32 to slide on the guide rail 31. When the damper plate 32 moves to the second direction section 312 of the guide rail 31, the damper plate 32 forms a containing cavity with the panel 1. When the driving device 33 is started, the driving device 33 drives the damper plate 32 to slide on the first direction section 311 of the guide rail 31, or the driving device 33 drives the damper plate 32 to slide on the first direction section 311 of the guide rail 31 to the second direction section 312. When the driving device 33 drives the damper plate 32 to slide on the first direction section 311 of the guide rail 31, the damper plate 32 switches between the first position and the second position. The bulge part 322 on the shielding surface of the damper plate 32 extends into the air inlet 11 to shield the air inlet 11, or the air guide opening 321 on the damper plate 32 corresponds to the air inlet 11, so that the air inlet 11 is opened and used for air suction. After the damper plate 32 is completely moved from the first direction section 311 of the guide rail 31 to the second direction section 312, the damper plate 32 is obliquely arranged, and the containing cavity is formed between the damper plate 32 and the panel 1. The cleaning device can be installed in the containing cavity, and the damper plate 32 and the bulge part 322 on the shielding surface are cleaned. When the shielding surface of the damper plate 32 shields the air inlet 11, the bulge part 322 extends into the air inlet 11 and forms the appearance surface of the panel 1, and the part of the appearance surface corresponding to the bulge part 322 is clean.

[0035] Please refer to Figure 2 The both sides of the damper plate 32 are provided with bearings 34 capable of sliding on the guide rail 31, and the bearings 34 are sleeved with damping members 35. When the driving device 33 is started, the driving device 33 drives the damper plate 32 to slide on the guide rail 31 and to rise or fall relative to the air inlet 11. When the damper plate 32 slides on the guide rail 31, the bearings 34 on the both sides of the damper plate 32 slide on the guide rail 31, which can reduce the friction between the damper plate 32 and the guide rail 31. Since the bearings 34 are provided with the damping members 35, the damping members 35 can reduce the vibration generated when the bearings 34 slide on the guide rail 31, so that the driving device 33 drives the damper plate 32 to slide on the guide rail 31 more stably.

[0036] In some embodiments, the driving device 33 adopts a driving motor. The output end of the driving motor is connected with an output gear. The output gear is engaged with a rack. The rack is connected with the damper plate 32. When the driving motor is started, the output end of the driving motor drives the output gear to rotate. The output gear is engaged with the rack and drives the rack to move up and down, so as to drive the damper plate 32 to slide on the guide rail 31.

[0037] In some embodiments, the driving device 33 is a driving motor, the output end of the driving motor is connected with a screw rod, the screw rod is sleeved with a screw rod nut, the screw rod nut is connected with the air door plate 32, when the driving motor is started, the output end of the driving motor drives the screw rod to rotate, the screw rod nut slides up and down along the screw rod, and then the air door plate 32 slides along the guide rail 31.

[0038] In the illustrated embodiments, the driving device 33 is an electric push rod, the driving end of the electric push rod is connected with the air door plate 32, when the electric push rod is started, the electric push rod drives the air door plate 32 to slide along the guide rail 31. Figure 1 Figure 2 In the illustrated embodiments, the driving device 33 is an electric push rod, the driving end of the electric push rod is connected with the air door plate 32, when the electric push rod is started, the electric push rod drives the air door plate 32 to slide along the guide rail 31.

[0039] In the illustrated embodiments, the driving device 33 is an electric push rod, the driving end of the electric push rod is connected with the air door plate 32, when the electric push rod is started, the electric push rod drives the air door plate 32 to slide along the guide rail 31. Figure 1 Figure 4 ​​The wind box assembly of the present application is applied to the range hood, when the range hood works, the driving device 33 drives the damper plate 32 to move on the first section 311 of the guide rail 31, so that the damper plate 32 moves to the second position, at this time, the air guide opening 321 on the damper plate 32 corresponds to the air inlet 11, the air inlet 11 is opened, after the exhaust fan of the range hood starts, the external oil fume enters the wind box 2 through the air inlet 11 and the air guide opening 321, and flows to the exhaust fan of the range hood, and is discharged from the wind box 2; after the exhaust fan is closed, the driving device 33 drives the damper plate 32 to move on the guide rail 31, so that the damper plate 32 moves from the second position to the first position, the shielding surface on the damper plate 32 shields the air inlet 11, the air inlet is closed, the air in the environment cannot enter the wind box 2 through the air inlet 11 when the range hood is turned off, and the dust in the air cannot mix with the mixture of oil and water attached to the inner wall surface of the panel 1, the inner wall surface of the wind box 2 and the shell of the exhaust fan when the range hood is turned off, so that the formation of dirt is reduced. After the range hood works for a long time, a large amount of mixture of oil and water is generated on the inner wall surface of the wind box 2 and the inner wall surface of the panel 1, when the inner cavity of the wind box 2 needs to be cleaned, the exhaust fan of the range hood is closed, the damper plate 32 closes the air inlet 11, and then the cleaning device 4 is started, the up-down driving structure 45 drives the bracket assembly 41 to move along the guide structure 22 on the inner wall surface of the wind box 2, at the same time, the rotating driving structure 44 starts to drive the water supply pipeline 42 to rotate around the bracket assembly 41, the water supply pipeline 42 drives the spraying assembly 43 thereon to rotate, when the cleaning medium is delivered to the spraying assembly 43 through the water supply pipeline 42, the spraying assembly 43 sprays the cleaning medium to the spraying area, the spraying area of the spraying assembly 43 at least includes a first spraying area corresponding to the inner wall surface of the panel 1 of the range hood, after the spraying assembly 43 sprays the cleaning medium to the first spraying area, the cleaning medium cleans the inner wall surface of the panel 1 of the range hood, so that the mixture of oil and water attached to the inner wall of the panel 1 of the range hood is cleaned, the oil stains attached to the inner wall surface of the wind box 2 and the panel 1 of the range hood can be automatically cleaned, the wind box 2 of the range hood is kept clean, the range hood has a better purification effect, and the oil stains accumulated in the wind box 2 of the range hood can be cleaned without disassembling the range hood.

[0040] Please refer to Figure 4 , the wind box assembly of the present application, the wind collecting box 2 comprises the back plate 25, the spray area of the spray assembly 43 further comprises the second spray area corresponding to the inner wall surface of the back plate 25. When the wind box assembly of the present application is applied to the range hood, during the operation of the range hood, the external oil fume enters the wind collecting box 2 through the air inlet 11 on the face plate 1 of the range hood, and then is discharged from the wind collecting box 2; after the oil fume enters the wind collecting box 2, under the action of the exhaust fan 5 of the range hood, the oil fume flows towards the air inlet of the exhaust fan 5; during the flow towards the exhaust fan 5, part of the airflow formed by the oil fume will directly enter the shell of the exhaust fan 5 through the air inlet of the exhaust fan 5, and the other part will hit the back plate 25, and then flows along the back plate 25 towards the air inlet of the exhaust fan 5, and then enters the shell of the exhaust fan 5, and finally is discharged from the wind collecting box 2 by the exhaust fan 5. During the whole exhaust process, after the oil fume enters the wind collecting box 2 through the air inlet 11, it flows towards the exhaust fan 5; since the exhaust fan 5 is located above the air inlet 11, the oil fume flows upwards after entering the wind collecting box 2 through the air inlet 11, so that the mixture of oil and water formed by the oil fume in the wind collecting box 2 during the exhaust process mainly adheres to the part of the inner wall surface of the back plate 25 located above the air inlet 11 and the part of the inner wall surface of the face plate 1 located above the air inlet 11; when the mixture of oil and water accumulates to a certain amount on the part of the inner wall surface of the back plate 25 located above the air inlet 11 and the part of the inner wall surface of the face plate 1 located above the air inlet 11, the mixture of oil and water will flow along the part of the inner wall surface of the back plate 25 located above the air inlet 11 towards the part of the inner wall surface of the back plate 25 located below the air inlet 11, and along the part of the inner wall surface of the face plate 1 located above the air inlet 11 towards the part of the inner wall surface of the face plate 1 located below the air inlet 11, so that the spray area of the spray assembly 43 comprises the first spray area corresponding to the inner wall surface of the face plate 1 of the range hood and the second spray area corresponding to the inner wall surface of the back plate 25, and the spray assembly 43 cleans the first spray area and the second spray area, so that the inner wall surface of the back plate 25 and the inner wall surface of the face plate 1 can be cleaned.

[0041] Please refer to Figure 4The wind box assembly of the present application is applied to the range hood, when the range hood works, the exhaust fan 5 starts, the external oil fume enters the wind collecting box 2 through the air inlet 11 on the panel 1, and then is discharged from the wind collecting box 2 by the exhaust fan 5 arranged in the wind collecting box 2, the exhaust fan 5 is located above the air inlet 11, after the oil fume enters the wind collecting box 2, under the action of the exhaust fan 5, the oil fume flows to the air inlet of the exhaust fan 5, and then is discharged from the wind collecting box 2 by the exhaust fan 5. During the whole exhaust process, after the oil fume enters the wind collecting box 2 through the air inlet 11, the oil fume flows to the exhaust fan 5, because the exhaust fan 5 is located above the air inlet 11, after the oil fume enters the wind collecting box 2 through the air inlet 11, the oil fume flows upwards, so the mixture of oil and water formed by the oil fume in the wind collecting box 2 mainly adheres to the part of the inner wall surface of the back plate 25 located above the air inlet 11, the part of the inner wall surface of the panel 1 located above the air inlet 11 and the shell of the exhaust fan 5, when the mixture of oil and water accumulates to a certain amount on the part of the inner wall surface of the back plate 25 located above the air inlet 11, the part of the inner wall surface of the panel 1 located above the air inlet 11 and the shell of the exhaust fan, the mixture of oil and water flows along the part of the inner wall surface of the back plate 25 located above the air inlet 11 to the part of the inner wall surface of the back plate located below the air inlet 11 and flows along the part of the inner wall surface of the panel 1 located above the air inlet 11 to the part of the inner wall surface of the panel located below the air inlet 11, so the spraying assembly 43 is provided with the first cleaning position and the second cleaning position, in the first cleaning position, the spraying assembly 43 is located above the air inlet 11, at this time, the damper plate 32 shields the air inlet 11, the exhaust fan 5 is closed, the spraying assembly 43 sprays the cleaning medium and cleans the mixture of oil and water on the part of the inner wall surface of the back plate 25 located above the air inlet 11, the part of the inner wall surface of the panel 1 located above the air inlet 11 and the shell of the exhaust fan 5, the cleaning medium mixes the mixture of oil and water cleaned and flows along the part of the inner wall surface of the back plate 25 located above the air inlet 11 to the part of the inner wall surface of the back plate 25 located below the air inlet 11, and flows along the part of the inner wall surface of the panel 1 located above the air inlet 11 to the part of the inner wall surface of the panel 1 located below the air inlet 11, until the spraying assembly 43 completes the cleaning work in the first cleaning position.After the spray assembly 43 completes the cleaning operation at the first cleaning position, the up-down driving structure 45 drives the bracket assembly 41 to move along the guide structure 22, so that the spray assembly 43 moves to the second cleaning position and is located below the air inlet 11. Then the driving device 33 drives the air baffle 32 to move along the guide rail 31, so that the air baffle 32 moves from the first section 311 to the second section 312 of the guide rail 31. After the air baffle 32 is completely moved to the second section 312, the air baffle 32 is in an inclined state, and the air baffle 32 and the panel 1 form a containing cavity, the cleaning device 4 is located in the containing cavity, and the baffle surface of the air baffle 32 is cleaned in the containing cavity. When the cleaning device 4 cleans the baffle surface of the air baffle 32, the operation of the exhaust fan 5 is not affected. After the exhaust fan 5 is turned off after the operation is completed, the driving device 33 can transport the cleaned air baffle 32 to the first section 311 of the guide rail 31, and move the air baffle 32 to the first position to close the air inlet 11. The clean bulge part 322 extends from the air inlet 11, and the baffle surface seen from the user side is clean, so that the appearance of the panel 1 of the range hood can be kept clean and tidy.

[0042] Please refer to Figure 4The spraying area of the bellow assembly of the present application, the spraying area of the spraying assembly 43 further comprises a third spraying area corresponding to the area where the smoke exhaust fan 5 is located, when the water supply pipe 42 rotates, the spraying assembly 43 can spray the inner wall surface of the faceplate 1, the inner wall surface of the back plate 25 and the smoke exhaust fan 5. When the bellow assembly of the present application is applied to the extractor hood, during the operation of the extractor hood, the smoke exhaust fan 5 is started, the external oil fume enters the air collecting bellow 2 through the air inlet 11 on the faceplate 1 of the extractor hood, and then is discharged from the air collecting bellow by the smoke exhaust fan 5 arranged in the air collecting bellow 2. The smoke exhaust fan 5 is located above the air inlet 11, after the oil fume enters the air collecting bellow 2, under the action of the smoke exhaust fan 5, the oil fume flows to the air inlet of the smoke exhaust fan 5, in the process of flowing to the air inlet of the smoke exhaust fan 5, part of the airflow formed by the oil fume will directly enter the shell of the smoke exhaust fan 5 through the air inlet of the smoke exhaust fan 5, another part will hit the back plate 25, and then flows along the back plate 25 to the air inlet of the smoke exhaust fan 5, and then enters the shell of the smoke exhaust fan 5, and finally is discharged from the air collecting bellow 2 by the smoke exhaust fan 5. During the whole smoke exhaust process, after the oil fume enters the air collecting bellow 2 through the air inlet 11, the oil fume flows to the smoke exhaust fan 5, since the smoke exhaust fan 5 is located above the air inlet 11, after the oil fume enters the air collecting bellow 2 through the air inlet 11, the oil fume flows upward, so during the smoke exhaust process, the mixture of oil and water formed by the oil fume in the air collecting bellow 2 mainly adheres to the part of the inner wall surface of the back plate 25 located above the air inlet 11, the part of the inner wall surface of the faceplate 1 located above the air inlet 11 and the shell of the smoke exhaust fan 5, when the mixture of oil and water accumulates to a certain amount on the part of the inner wall surface of the back plate 25 located above the air inlet 11, the part of the inner wall surface of the faceplate 1 located above the air inlet 11 and the shell of the smoke exhaust fan 5, the mixture of oil and water will flow along the part of the inner wall surface of the back plate 25 located above the air inlet 11 to the part of the inner wall surface of the back plate 25 located below the air inlet 11, along the part of the inner wall surface of the faceplate 1 located above the air inlet 11 to the part of the inner wall surface of the faceplate 1 located below the air inlet 11 and downward along the shell of the smoke exhaust fan 5, so the spraying area of the spraying assembly 43 comprises a first spraying area corresponding to the inner wall surface of the faceplate 1 of the extractor hood, a second spraying area corresponding to the inner wall surface of the back plate 25 and a third spraying area corresponding to the area where the smoke exhaust fan 5 is located, when the spraying assembly 43 is in the first cleaning position, the spraying assembly 43 is located above the air inlet 11, the spraying assembly 43 cleans the part of the first spraying area and the second spraying area located above the air inlet 11 and the third spraying area, when the spraying assembly 43 is in the second cleaning position, the spraying assembly 43 is located below the air inlet 11, the spraying assembly 43 cleans the part of the first spraying area and the second spraying area located below the air inlet 11, so the inner wall surface of the back plate 25, the inner wall surface of the faceplate 1 and the shell of the smoke exhaust fan 5 can be cleaned completely.

[0043] Please refer to Figure 1The bellows assembly of the present application, the spraying assembly 43 comprises a plurality of spray heads uniformly distributed on the water supply pipeline 42, the water supply pipeline 42 is connected with a water pump, the water supply pipeline 42 is provided with a control valve, the water pump is connected with a water tank for storing cleaning medium, the spray head is provided with a connecting port between the water supply pipeline, and each connecting port is provided with an on-off valve. When the spraying assembly 43 works, the water pump starts, the control valve opens, the cleaning medium stored in the water tank is pumped into the water supply pipeline 42 by the water pump, and the spray head sprays the cleaning medium under the condition that the on-off valve opens the connecting port between the spray head and the water supply pipeline 42, so that the spraying area is cleaned.

[0044] Please refer to Figure 1 The bellows assembly of the present application, the rotating driving structure 44 comprises a rotating driving motor 441, the rotating driving motor 441 is provided with an output rotating shaft, the output rotating shaft is connected with a first connecting rod 442, the water supply pipeline 42 is connected with a second connecting rod 443, and the first connecting rod 442 and the second connecting rod 443 are hinged with a third connecting rod 444; the up-down driving structure 45 is an electric push rod for driving the support assembly 41 to slide along the guide structure 22. When the rotating driving structure 44 works, the rotating driving motor 441 starts, the output end of the rotating driving motor 441 drives the one end of the first connecting rod 442 connected with the first connecting rod 442 to rotate, and makes the one end of the first connecting rod 442 connected with the third connecting rod 444 to swing, the first connecting rod 442 drives the third connecting rod 444 to swing, and makes the one end of the second connecting rod 443 connected with the third connecting rod 444 to swing, the other end of the second connecting rod 443 is connected with the water supply pipeline 42, the other end of the second connecting rod 443 rotates at the same time to drive the water supply pipeline 42 to rotate, and the spraying assembly 43 rotates with the water supply pipeline 42.

[0045] The bellows assembly of the present application, the support assembly 41 comprises a left support and a right support, the water supply pipeline 42 is rotatably connected to the left support and the right support, the water supply pipeline 42 is made of hard material, the rotating driving structure 44 is fixed to the left support or the right support, and the support assembly 41 is arranged above the air inlet 11. When the spraying assembly 43 needs to move from the first cleaning position to the second cleaning position or from the second cleaning position to the first cleaning position, the up-down driving structure 45 starts to drive the support assembly 41 to slide along the guide structure 22, the water supply pipeline 42 slides along the guide structure 22 with the support assembly 41, so that the spraying assembly 43 moves between the first cleaning position and the second cleaning position, and the corresponding spraying area is cleaned. The support assembly 41 arranged above the air inlet 11 means that the support assembly 41 does not contact the inner wall surface of the panel 1 after the support assembly 41 is slidably connected with the guide structure 22, and there is a gap between the support assembly 41 and the air inlet 11. The gap makes the water supply pipeline 42 not contact the inner wall surface of the panel 1, avoids the liquid outlet of the spraying assembly 43 from being blocked, and provides a flow space for the cleaning medium when the spraying assembly 43 sprays the cleaning medium to the inner wall surface of the panel 1.

[0046] The application further discloses an oil fume extractor, which adopts the above-mentioned bellows assembly and comprises a control system capable of controlling the operation state of an exhaust fan 5, wherein the exhaust fan 5 and a driving device 33 are electrically connected with the control system. When the exhaust fan 5 is closed, the driving device 33 drives a damper plate 32 to shield the air inlet 11 so as to close the air inlet 11, and the cleaning device 4 enters a first cleaning position, and the spraying assembly 43 starts to work and can spray cleaning medium at 360°. When the exhaust fan 5 is opened, the cleaning device 4 enters a second cleaning position, the driving device 33 drives the damper plate 32 to move away from the air inlet 11 so as to open the air inlet 11, and the spraying assembly 43 cleans the bulge part 322. The exhaust fan 5 is arranged in the air collecting bellows 2 and located above the air inlet 11. When the exhaust fan 5 works, the damper plate 32 is located at a second position or the damper plate 32 is located on a second section 312 of the guide rail 31. When the damper plate 32 is located at the second position, the air guide opening 321 on the damper plate 32 corresponds to the air inlet 11, and the air inlet 11 is opened. When the damper plate 32 is located on the second section 312 of the guide rail 31, the damper plate 32 is located below the air inlet 11 and is in an inclined state, and at this time, the air inlet 11 is also in an opened state. When the exhaust fan 5 works, only when the cleaning device 4 moves to the second cleaning position and the damper plate 32 is located on the second section 312 of the guide rail 31, the cleaning device 4 starts to work and cleans the shielding surface of the damper plate 32. When the exhaust fan 5 is closed, the damper plate 32 is located at a first position, the bulge part 322 on the shielding surface of the damper plate 32 extends from the air inlet 11 and shields the air inlet 11. At this time, the cleaning device 4 can work at the first cleaning position and clean the part of the inner wall surface of the back plate 25 located above the air inlet 11, the part of the damper plate 32 located above the air inlet 11, the part of the inner wall surface of the panel 1 located above the damper plate 32 and the shell of the exhaust fan 5. When the cleaning device 4 moves to the second cleaning position, the cleaning device 4 cleans the part of the inner cavity of the air collecting bellows 2 located below the air inlet 11, the part of the damper plate 32 located below the air inlet 11 and the part of the panel 1 located below the damper plate 32.

[0047] Please refer to Figure 4The oil collecting cup 24 is provided with a liquid level sensor. When the first cleaning position is reached, the cleaning device 4 adjusts the spraying time according to the amount of oil collected in the oil collecting cup 24, and stops working after the spraying time is reached. When the second cleaning position is reached, the cleaning device 4 stops working after 1-5 minutes. When the cleaning device 4 is working, the mixture of cleaning medium, oil and water sprayed by the spraying assembly 43 flows along the inner wall surface of the back plate 25, the inner wall surface of the panel 1, the air door plate 32 and the shell of the exhaust fan 5, and then drips to the bottom of the air collecting box 2, and then drips downward through the oil leakage hole 23 provided at the bottom of the air collecting box 2, and is collected by the oil collecting cup 24 at the bottom of the air collecting box 2. When the first cleaning position is reached, the spraying range of the spraying assembly 43 is large. When the liquid level sensor in the oil collecting cup 24 does not alarm the control system, the spraying assembly 43 will continue to work and clean the oil in the spraying area. When the amount of oil collected in the oil collecting cup 24 reaches the pre-warning amount of the liquid level sensor, the liquid level sensor alarms the control system, the control system adjusts the spraying time of the spraying assembly 43, and avoids the overflow of the oil in the oil collecting cup 24. When the second cleaning position is reached, the spraying assembly 43 cleans the shielding surface of the air door plate 32 and the inner wall surface of the panel 1 below the air inlet 11, and the cleaning range is small. At this time, the spraying assembly 43 stops working after 1-5 minutes, and the shielding surface of the air door plate 32 and the inner wall surface of the panel 1 below the air inlet 11 can be cleaned completely.

[0048] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fan assembly for a range hood, characterized in that, include: Panel (1), on which an air intake (11) is provided; An air collection box (2) is connected to the air intake (11); A damper assembly (3) includes a guide rail (31) disposed within the air collection box (2), a damper plate (32) slidably connected to the guide rail (31), and a drive device (33) for driving the damper plate (32) to move on the guide rail (31). The damper plate (32) is provided with a shielding surface and an air guide opening (321) arranged parallel to the shielding surface. The shielding surface is provided with a bulge (322) protruding towards the air intake (11). The bulge (322) is adapted to the air intake (11). The damper plate (32) moves on the guide rail (31). The rail (31) has a first position and a second position; when the damper plate (32) is in the first position, the bulge (322) extends into the air intake (11), the top surface of the bulge (322) is flush with the outer side of the panel (1) and forms the outer surface of the panel (1); when the damper plate (32) is in the second position, the air guide opening (321) corresponds to the air intake (11), the air intake (11) is opened and used for air intake, and the shielding surface of the damper plate (32) is closely attached to the inner wall surface of the panel (1).

2. The bellows assembly according to claim 1, characterized in that, The guide rail (31) includes a first section (311) and a second section (312). When the driving device (33) drives the damper plate (32) to slide in the first section (311), the damper plate (32) switches between the first position and the second position. The bulge (322) extends from the air intake (11) or the air guide opening (321) corresponds to the air intake (11). When the driving device (33) drives the damper plate (32) to move to the second section (312) of the guide rail (31), the damper plate (32) is inclined and the inclination angle is 10°-30°. There is a gap between the bulge (322) and the panel (1).

3. The bellows assembly according to claim 2, characterized in that, The bottom of the air collection box (2) is provided with a first bracket (21), the driving device (33) is fixed on the first bracket (21), the driving end of the driving device (33) is fixedly connected to the lower end of the damper plate (32) and drives the damper plate (32) to slide on the guide rail (31). When the damper plate (32) moves to the second direction section (312) of the guide rail (31), a receiving cavity is formed between the damper plate (32) and the panel (1).

4. The bellows assembly according to claim 3, characterized in that, The air collection box (2) is also provided with a cleaning device (4). The cleaning device (4) includes a support assembly (41) installed on the inner wall of the air collection box (2) and a water supply pipe (42) installed on the support assembly (41). The water supply pipe (42) is provided with a spray assembly (43) facing one side. The support assembly (41) is provided with a rotation drive structure (44) that can drive the water supply pipe (42) to rotate. The inner wall of the air collection box (2) is also provided with a guide structure (22) that allows the support assembly (41) to slide. The guide structure (22) is provided with an up-down drive structure (45) for driving the support assembly (41) to slide along the guide structure (22).

5. The bellows assembly according to claim 4, characterized in that, The air collection box (2) is equipped with a smoke exhaust fan (5), and the spray assembly (43) is provided with a first cleaning position and a second cleaning position. In the first cleaning position, the spray assembly (43) is located above the air intake (11), the damper plate (32) covers the air intake (11), the smoke exhaust fan (5) is closed, and the spray assembly (43) sprays cleaning medium to clean the inner cavity of the air collection box (2). In the second cleaning position, the spray assembly (43) is located in the accommodating cavity, the damper plate (32) is located in the second direction section (312) of the guide rail (31), the smoke exhaust fan (5) is running, and the spray assembly (43) sprays cleaning medium toward the top surface of the bulge (322) to clean the shielding surface.

6. The bellows assembly according to claim 4, characterized in that, The spray assembly (43) includes several nozzles evenly distributed on the water supply pipe (42). The water supply pipe (42) is connected to a water pump. A control valve is provided on the water supply pipe (42). The water pump is connected to a water tank for storing cleaning medium. A connection port is provided between the nozzle and the water supply pipe. A switch valve is provided at each connection port.

7. The bellows assembly according to claim 4, characterized in that, The rotation drive structure (44) includes a rotation drive motor (441), an output shaft on the rotation drive motor (441), a first connecting rod (442) connected to the output shaft, a second connecting rod (443) connected to the water supply pipe (42), and a third connecting rod (444) hinged between the first connecting rod (442) and the second connecting rod (443); the up and down drive structure (45) is an electric push rod that drives the bracket assembly (41) to slide along the guide structure (22).

8. The bellows assembly according to claim 4, characterized in that, The bracket assembly (41) includes a left bracket and a right bracket. The water supply pipe (42) is rotatably connected to the left bracket and the right bracket. The water supply pipe (42) is made of rigid material. The rotation drive structure (44) is fixed to the left bracket or the right bracket. The bracket assembly (41) is positioned above the air intake (11).

9. A range hood, employing the fan assembly according to any one of claims 5 to 8, characterized in that, The system includes a control system that controls the operation of the exhaust fan (5). The exhaust fan (5) and the drive device (33) are electrically connected to the control system. When the exhaust fan (5) is off, the drive device (33) drives the damper plate (32) to cover the air intake (11) so that the air intake (11) is closed. The cleaning device (4) enters the first cleaning position, and the spray assembly (43) starts working and can spray the cleaning medium in 360°. When the exhaust fan (5) is on, the cleaning device (4) enters the second cleaning position. The drive device (33) drives the damper plate (32) away from the air intake (11) so that the air intake (11) is opened. The spray assembly (43) cleans the bulge (322).

10. The range hood according to claim 9, characterized in that, The bottom of the air collection box (2) is provided with an oil leakage hole (23) and an oil cup (24) for receiving the oil spilled from the oil leakage hole (23). The oil cup (24) is provided with a liquid level sensor. When the first cleaning position is reached, the cleaning device (4) adjusts the spraying time according to the amount of oil collected in the oil cup (24). The cleaning device (4) stops operating after the spraying time is reached. When the spraying assembly (43) enters the second cleaning position, the cleaning device (4) stops operating after working for 1-5 minutes.

Images